Miner s squib



@No Model.)

G. HAYES.

MINBRS SQUIB. No. 291,343. Patented Jan. 1, 1884.

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WITNESSES INVENTOR ATTORNEYS.

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GEORGE HAYES, OF GIRARDVILLE, PENNSYLVANIA.

MINERS SQUIB.

SPECIFICATION forming part of Letters Patent No. 291,343, dated January 1, 1884.

Application filed November 17, 1883. (No model.)

To aZZ whom it may concern.-

Be it known that I, GEORGE HAYES, of Girardville, in the county ofSchuylkilland State of Pennsylvania, have invented a new and Improved Miners Squib, of which the following is a full, clear, and exact description.

The fuses or squibs, as they are termed, which miners use for igniting blasts, as commonly made, consist of two main portions viz., a tube portion, which contains the powder, and a match portion,whieh in using the squib is first ignited; and the fuses or squibs are commonly made of one piece of paper, the tube portion being coated with cement for stiliening it, and the match portion twisted down to the tube portion for forming the choke for retaining the powder in the tube. The difiiculty with this old form of squib is that the fire applied to the match portion of the squib is liable to slumber at the choke, just before reaching the powder in the tube, because of over tightness given the paper twist at the choke for retaining the powder; and often the fire will go out at this point or slumher so long that the workmen will think that it has gone out, and approach the blast just in time to be killed or injured by the explosion.

The object of my invention is to overcome this difficulty; and my invention consists,prineipally, in coating or saturating the match portion at the choke with saltpeter, saltpeter solution, coal-oil, or other rapidly burning substance, which will cause the fire to burn rapidly and surely past the choke to the powder.

he invention also consists in making the squib with a double choke, all as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in both figures.

Figure l is an elevation of the tube portion of a miners squib made in accordance with my invention, and without the match por* tion; and Fig. 2is a broken elevation of a comsolution, coal-oil, or other material, to cause" it to burn rapidly. The main outer match portion, B, ofthe squib is made of a separate piece of paper prepared in the ordinary manner, secured to the tube A and twisted over the inner match, a, as shown clearly in Fig. 2. The match portion B being attached to tube A, in order to complete the squib the tube A is coated upon the outside with some cement in the ordinary manner, and after the cement has dried the tube is filled with powder, and its lower end, 0, stopped with hard soap or other suitable material.

Made in the manner described, the match portion B, when ignited, will burn slowly until the fire reaches the tip of the inner match, a, when the fire will run quite rapidly, owing to the saltpeterorother substance placed upon the inner match, past the choke, and set off the powder in the tube A, so that there is not only no danger of the fire slumbering at the choke of the squib, endangering and delaying the workmen, but there is no danger of the squib going out at that point.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

A11 improved miners squib, consisting of the tube A, having an inner integral match, a, coated or saturated withsomerapidly-burning substance, and an outer match, B, secured to the tube over the match, substantially as herein shown and described.

GEORGE HAYES.

\Vitnesses:

ROBERT H. KLEES,

PHILIP PORTNER. 

